IBIC2014 - List of Keywords (acceleration)

Paper	Title	Other Keywords	Page
MOPF02	RHIC-Style IPMs in the Brookhaven AGS	electron, detector, dipole, injection	39
	R. Connolly, W.C. Dawson, J.M. Fite, H. Huang, S.E. Jao, W. Meng, R.J. Michnoff, S. Tepikian BNL, Upton, Long Island, New York, USA
	Funding: Work supported by U.S. Department of Energy. Beam profiles in the two storage rings of the Relativistic Heavy-Ion Collider (RHIC) at Brookhaven National Lab (BNL) are measured with ionization profile monitors (IPMs). An IPM measures the distribution of electrons produced by beam ionization of background gas. These detectors have been developed at BNL in a program that began in 1996. The current detectors are a design from 2009. During the 2012 shutdown we refurbished the 2009 prototype detector and installed it in the Alternating-Gradient Synchrotron (AGS) for horizontal profiles. The commissioning tests were successful and in 2013 we built a new IPM for vertical profiles. In addition we placed coils on the backlegs of the permanent-magnet dipoles for beta-function measurements. This paper describes the AGS IPMs and shows data from the detector commissioning.
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MOPF09	Absolute Beam Emittance Measurements at RHIC Using Ionization Profile Monitors	emittance, detector, heavy-ion, ion	64
	M.G. Minty, R. Connolly, C. Liu, T. Summers, S. Tepikian BNL, Upton, Long Island, New York, USA
	Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy In this report we present studies of and measurements from the RHIC ionization profile monitors (IPMs). Improved accuracy in the emittance measurements has been achieved by (1) continual design enhancements over the years, (2) application of channel-by-channel offset corrections and gain calibrations in the beam profile measurements and (3) use of measured beta functions at the locations of the IPMs. The removal of systematic errors in the emittance measurements was confirmed by the convergence of all four planes of measurement (horizontal and vertical planes of both the Blue and Yellow beams) to a common value during beam operations with stochastic cooling. Consistency with independent measurements (luminosity-based using zero degree counters) at the colliding beam experiments STAR and PHENIX was demonstrated.
	Poster MOPF09 [1.109 MB]
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MOPD09	Longitudinal Phase Space Tomography Using a Booster Cavity at the Photo Injector Test Facility at DESY, Zeuthen Site (PITZ)	laser, booster, electron, gun	161
	D. Malyutin, M. Groß, I.I. Isaev, M. Khojoyan, G. Kourkafas, M. Krasilnikov, B. Marchetti, F. Stephan, G. Vashchenko DESY Zeuthen, Zeuthen, Germany
	One of the ways to measure the longitudinal phase space of the electron bunch in a linear accelerator is a tomographic technique based on measurements of the bunch momentum spectra while varying the bunch energy chirp. The energy chirp at PITZ can be controlled by varying the RF phase of the CDS booster – the accelerating structure installed downstream the electron source (RF gun). The resulting momentum distribution can be measured with a dipole spectrometer downstream. As a result, the longitudinal phase space at the entrance of the CDS booster can be reconstructed. In this paper the tomographic technique for longitudinal phase space measurements is described. Results of measurements at PITZ are presented and discussed.
	Poster MOPD09 [0.925 MB]
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Paper

Title

Other Keywords

Page

MOPF02

RHIC-Style IPMs in the Brookhaven AGS

electron, detector, dipole, injection

39

R. Connolly, W.C. Dawson, J.M. Fite, H. Huang, S.E. Jao, W. Meng, R.J. Michnoff, S. Tepikian
BNL, Upton, Long Island, New York, USA

Funding: Work supported by U.S. Department of Energy.
Beam profiles in the two storage rings of the Relativistic Heavy-Ion Collider (RHIC) at Brookhaven National Lab (BNL) are measured with ionization profile monitors (IPMs). An IPM measures the distribution of electrons produced by beam ionization of background gas. These detectors have been developed at BNL in a program that began in 1996. The current detectors are a design from 2009. During the 2012 shutdown we refurbished the 2009 prototype detector and installed it in the Alternating-Gradient Synchrotron (AGS) for horizontal profiles. The commissioning tests were successful and in 2013 we built a new IPM for vertical profiles. In addition we placed coils on the backlegs of the permanent-magnet dipoles for beta-function measurements. This paper describes the AGS IPMs and shows data from the detector commissioning.

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MOPF09

Absolute Beam Emittance Measurements at RHIC Using Ionization Profile Monitors

emittance, detector, heavy-ion, ion

64

M.G. Minty, R. Connolly, C. Liu, T. Summers, S. Tepikian
BNL, Upton, Long Island, New York, USA

Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy
In this report we present studies of and measurements from the RHIC ionization profile monitors (IPMs). Improved accuracy in the emittance measurements has been achieved by (1) continual design enhancements over the years, (2) application of channel-by-channel offset corrections and gain calibrations in the beam profile measurements and (3) use of measured beta functions at the locations of the IPMs. The removal of systematic errors in the emittance measurements was confirmed by the convergence of all four planes of measurement (horizontal and vertical planes of both the Blue and Yellow beams) to a common value during beam operations with stochastic cooling. Consistency with independent measurements (luminosity-based using zero degree counters) at the colliding beam experiments STAR and PHENIX was demonstrated.

Poster MOPF09 [1.109 MB]

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MOPD09

Longitudinal Phase Space Tomography Using a Booster Cavity at the Photo Injector Test Facility at DESY, Zeuthen Site (PITZ)

laser, booster, electron, gun

161

D. Malyutin, M. Groß, I.I. Isaev, M. Khojoyan, G. Kourkafas, M. Krasilnikov, B. Marchetti, F. Stephan, G. Vashchenko
DESY Zeuthen, Zeuthen, Germany

One of the ways to measure the longitudinal phase space of the electron bunch in a linear accelerator is a tomographic technique based on measurements of the bunch momentum spectra while varying the bunch energy chirp. The energy chirp at PITZ can be controlled by varying the RF phase of the CDS booster – the accelerating structure installed downstream the electron source (RF gun). The resulting momentum distribution can be measured with a dipole spectrometer downstream. As a result, the longitudinal phase space at the entrance of the CDS booster can be reconstructed. In this paper the tomographic technique for longitudinal phase space measurements is described. Results of measurements at PITZ are presented and discussed.

Poster MOPD09 [0.925 MB]

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